NMR observation of ferro-quadrupole order in PrTi2Al20

Takanori Taniguchi, Makoto Yoshida, Hikaru Takeda, Masashi Takigawa, Masaki Tsujimoto, Akito Sakai, Yosuke Matsumoto, Satoru Nakatsuji

研究成果: Article査読

17 被引用数 (Scopus)

抄録

We report the results of 27Al-NMR measurements on a single crystal of PrTi2Al20. This compound shows a phase transition near 2 K associated with the quadrupole degree of freedom of Pr ions, for which the ground state of the crystalline electric field is a nonmagnetic doublet. When a magnetic field is applied along the '111' direction, the NMR lines split upon entering the low-temperature phase, indicating the breaking of the three fold rotation symmetry due to the field-induced magnetic dipole perpendicular to the field. This provides microscopic evidence for a ferro order of the O20 quadrupole. Although a first-order transition is expected theoretically, the line splitting evolves continuously within the experimental resolution.

本文言語English
論文番号113703
ジャーナルjournal of the physical society of japan
85
11
DOI
出版ステータスPublished - 2016 11月 15
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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